fix build error

* NAN is not defined on some platform * follow the comment on PR

fix build error
* NAN is not defined on some platform * follow the comment on PR
891c83ff · Tomoaki Teshima · 1001b05d · 891c83ff
Commit 891c83ff authored Jul 24, 2016 by Tomoaki Teshima
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test_arithm.cpp modules/core/test/test_arithm.cpp +4 -0

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--- a/modules/core/test/test_arithm.cpp
+++ b/modules/core/test/test_arithm.cpp
 #include "test_precomp.hpp"
 #include <cmath>
+#ifndef NAN
+#include <limits> // numeric_limits<T>::quiet_NaN()
+#define NAN std::numeric_limits<float>::quiet_NaN()
+#endif

 using namespace cv;
 using namespace std;